If under stack pressure, do not enable eager stack use.

third_party/WebKit/Source/platform/heap/StackFrameDepth.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/heap/StackFrameDepth.h"
 
 #include "public/platform/Platform.h"
 
 #if OS(WIN)
 #include <stddef.h>
@@ skipping 53 matching lines @@
         return;
     }
 
     static const int kStackRoomSize = 1024;
 
     Address stackBase = reinterpret_cast<Address>(getStackStart());
     RELEASE_ASSERT(stackSize > static_cast<const size_t>(kStackRoomSize));
     size_t stackRoom = stackSize - kStackRoomSize;
     RELEASE_ASSERT(stackBase > reinterpret_cast<Address>(stackRoom));
     s_stackFrameLimit = reinterpret_cast<uintptr_t>(stackBase - stackRoom);
+
+#if ENABLE(ASSERT)
+    // If current stack use is already exceeding estimated limit, mark as disabled.
+    if (!isSafeToRecurse())
+        s_isEnabled = false;
+#endif
 }
 
 size_t StackFrameDepth::getUnderestimatedStackSize()
 {
     // FIXME: ASAN bot uses a fake stack as a thread stack frame,
     // and its size is different from the value which APIs tells us.
 #if defined(ADDRESS_SANITIZER)
     return 0;
 #endif
 
@@ skipping 102 matching lines @@
     return reinterpret_cast<void*>(__readgsqword(offsetof(NT_TIB64, StackBase)));
 #else
     return reinterpret_cast<void*>(__readfsdword(offsetof(NT_TIB, StackBase)));
 #endif
 #else
 #error Unsupported getStackStart on this platform.
 #endif
 }
 
 } // namespace blink